I know someone who is constantly gossiping about other people, who will tell people so-and-so's faults or if they did something stupid, surprising or anything that this person either wouldn't do or doesn't agree with. And quite often it sounds like dibber-dobbing to these people's colleagues or people more senior whose opinion of the person of subject can be affected.
And this person is supposedly Christian. It just doesn't seem like a very Christian thing to do, and somewhat mean, especially if this person talks about faults of others and possibly affect their career or promotional chances etc.
I can understand the need to gossip as a way of bonding between colleagues, but I dunno, this seems to go beyond that.